AI Writing Pattern Checker

Estimate whether English text resembles patterns commonly found in AI-generated writing. This tool runs in your browser; the first load may take a moment while the model is cached.

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Important:This is a probabilistic writing-pattern estimate, not proof of authorship. Do not use it as the sole basis for grading, hiring, discipline, or accusations.

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This tool processes the data you enter in your browser during the analysis.

Words: 0Minimum 250 · Maximum 5,000 words
First load:This tool runs in your browser. The first load may take a moment while the model is cached.
Technical details
—WebGPU —WebAssembly —Web Workers —Cache Storage
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Results appear here after analysis.

How AI Content Detection Works

AI detectors analyze writing patterns. Rather than claiming that individual words are AI-generated, this tool highlights paragraphs or sections whose combined model and writing-pattern signals are elevated.

What the detector examines

  • Sentence variation — Humans vary sentence length and structure more.
  • Word predictability — AI text shows more predictable sequences.
  • Phrase repetition — Repeated phrase distribution can signal authorship.
  • Lexical diversity — Range of unique vocabulary provides another signal.
  • Section-level hotspots — Color coding shows where template markers, stock phrasing, or elevated model scores are concentrated.

Best Practices

Use as one signal

Pair the score with your own review.

Context matters

AI-pattern scores matter differently depending on content type.

Respect uncertainty

Trust mixed results rather than forcing a decision.

FAQ

Tool notes · Reviewed Jun 2026 · Sources and limitations

Review details: 2026-06-13 · Marc LaClear · v1.3-beta

Reference sources:

Known limits:

  • AI detection is probabilistic and can be wrong.
  • The score combines a local model with deterministic writing-pattern checks for generic AI article structure.
  • Color coding highlights paragraph- or section-level evidence only; it does not prove that specific words were generated.
  • Accuracy varies by text length, domain, author style, and AI model.
  • Edited AI text and non-native English may produce uncertain results.